EP 0258788 B1 19900530 - PROCESS FOR PREPARING PROPYLENE HOMO- AND COPOLYMERS BY MEANS OF A ZIEGLER-NATTA CATALYTIC SYSTEM
Title (en)
PROCESS FOR PREPARING PROPYLENE HOMO- AND COPOLYMERS BY MEANS OF A ZIEGLER-NATTA CATALYTIC SYSTEM
Publication
Application
Priority
DE 3629583 A 19860830
Abstract (en)
[origin: EP0258788A1] 1. A process for the preparation of a homopolymer of propylene or a copolymer of propylene with minor amounts of other C2 -C12 -alpha-monoolefins at from 20 to 160 degrees C and under from 1 to 100 bar using a Ziegler-Natta catalyst system consisting of (1) a titanium component, which may have been applied to a silicate carrier, comprising a atomic parts of titanium, b atomic parts of magnesium, c atomic parts of chlorine and d molar parts of a derivative of phthalic acid, with or without minor amounts of other components, with the proviso that b = 4a to 50a, c = 2a + b to 4a + 2b and d = 0.02b to 0.40b, (2) an aluminum alkyl of the formula ALR**3 , where R is alkyl of not more than 8 carbon atoms, and (3) an alkoxy-containing silicon compound as a cocatalyst, with the provisos that the atomic ratio of titanium from the titanium component (1) to aluminum from the aluminum alkyl (2) is from 1:20 to 1:1,000 and the molar ratio of aluminum alkyl (2) to cocatalyst (3) is from 10:8 to 10:0.1, wherein a catalyst system is used which contains, as cocatalyst (3), a silicon compound of the composition (R5-n-1 Rn-2 C6 )x Si(OR**3 )4-x , where C6 is a benzene nucleus, R**1 is a C1 -C10 -hydrocarbon radical or H, R**2 is a C1-10 -hydrocarbon radical, or R**1 and R**2 are each an OR**4 group where R**1 is different from R**2 and R**4 is R**2 , R**3 is a C1 -C6 -hydrocarbon radical, n is from 1 to 5 and x is from 1 to 3.
IPC 1-7
IPC 8 full level
C08F 4/50 (2006.01); C08F 4/58 (2006.01); C08F 4/60 (2006.01); C08F 4/64 (2006.01); C08F 10/00 (2006.01); C08F 10/06 (2006.01)
CPC (source: EP)
C08F 10/06 (2013.01)
Designated contracting state (EPC)
AT BE DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0258788 A1 19880309; EP 0258788 B1 19900530; AR 241141 A1 19911129; AR 241141 A2 19911129; AT E53222 T1 19900615; AU 7766287 A 19880303; DE 3629583 A1 19880303; DE 3762973 D1 19900705; ES 2015022 B3 19900801; JP S6363704 A 19880322
DOCDB simple family (application)
EP 87112315 A 19870825; AR 30851687 A 19870825; AT 87112315 T 19870825; AU 7766287 A 19870828; DE 3629583 A 19860830; DE 3762973 T 19870825; ES 87112315 T 19870825; JP 20429187 A 19870819